Mini-Quiz: Kepler’s Laws of Orbital Motion

1. Could a satellite orbit the Earth in a circle?

   Yes, but it is a special caseThat's correct. You understand about orbital motion. No, because the Earth is not a perfect sphereGood try, but not right. Select another answer. Only during a Full MoonSorry, not correct. Try another button.

2. What happens when the Earth's orbit brings it closer to the Sun?

   The Earth heats up with global warmingSorry, not correct. Try another button. It never gets closer, since the orbit is a perfect circleOops! Wrong answer. Re-read the question and try again. The Earth speeds up in its orbitCorrect answer. You sure are smart!

3. Since Mars is 1.67 AU from the Sun, how long does it take to orbit the Sun?

   Twice as long as JupiterGood try, but not right. Select another answer. 2.1 Earth yearsThat's correct. You understand about orbital motion. 1 Earth yearOops! Wrong answer. Re-read the question and try again.

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